Ignition device for internal-combustion engines



Sept. 4, 1923. v A. ERICKSON' 'lqNnioN DEVICE FOR INTERNAL COMBUSTIONENGINES Filed July 21 191s) 5 Sheets-Sheet 1 Sept. 4, 1923. I 1,467,270

A. ERICKSON IGNITION DEVICE Fori INTERNAL COMBUSTION ENGINES Filed July21 1919 3 Sheets-Sheet 2 l IN Sept. 4, 1923.

I A. ERICKS IGNITION DEVICE FOR INTERN AL COMBUSTION ENGINESSl'xeets-Sheet 5 led July 21 1919 I i x NI\ZI. 7M... t

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Patented Sept. 4, i923.

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I 1,467,270 PAT-ENT' OFFICE.

ALBERT ERICKSON, OF CHICAGO, ILLINOIS, ASSIG-NOI TO SCPLI'IDORI?ELECTRICAL COMPANY, OF NEWARK, NEW JERSEY, A CORPORATION OF NEW JERSEY.

IGNITION DEVICE FOR INTERNAL-COMBUSTIQN :eive'rrins.

Application filed July 21,

To all whom it may concern:

Be it known that I, ALBERT ERICKSON, a citizen of the United States,residing at Chicago, in the county of Cook, State of Illinois, haveinvented certain new and useful Improvements in Ignition Devices forInternal-Combustion Engines, of which the following is a description,reference being had to the accompanying drawing and to the figuresofreference marked thereon.

The invention relates to new and useful improvements in ignitiondevices, and more particularly to an ignition device having. a fixed anda movable electrode to which current is suppliedby a magneto generator.

An object of the invention'is to provide an ignition device of the abovecharacter, wherein the fixed and movable electrodes are supported by amember or part which is readily detachable from the bracket carrying themagneto, generator, whereby new electrodes may be readily substituted.for-the old ones without requiring any changes in the bracket structurewhich carries the mag neto generator. c

A further object of the invention is to provide a device of theabovecharacter,v wherein the spring for holding the electrodes closed issupported by the part or member carrying the electrodes. a

A still further object of the invention is to provide a device oftheabove character, wherein the fixed electrode has a sliding detachableconnection with a terminal member on the bracket carrying the. magnetogenerator, so that the electrodes may be separated from the magnetogenerator without discon necting any parts.

These and other objects will in part beobvious and will in part behereinafter more fully disclosed. v

v In the drawings which showby way of illustration one embodiment of theinvention- Figure l is a perspective view showing a portion, of anengine cylinder, the pad carried thereby, the supporting stud for thebracket carrying the magneto and the electrodes, together with thesupporting means therefor; v

Figure v2 is an end view of the magneto generator showing the supportingbracket therefor;

Figure 3 is a vertical sectional, view through a portion of the enginecylinder and 1919. Serial No. 312,229.

a portion of the bracket-carrying the magneto generator;

Figure 4 is a horizontal sectional view of the same. e

The invention is directed broadly to an ignition device having a fixedand amova-ble electrode with which is associated a magneto generator forsupplying current for lg; nition. by a bracket which is detachablymounted on the engine cylinder. Said bracketis formed with an openingwhich is adapted to register with the opening in the engine,- which isadapted to receive the spark plug;

. which includes the fixed'and movable 'electrodes and the supportingmember orpart therefor. This spark plug extends out wardly away from thecylinder to the engine andinto an opening in the'bracket, said openingbeing shaped to con'formg'en erally to the shape of the projecting plug;and fitting snugly around the same. Said projecting plug is formed with:a shoulder which overlaps the edg e' of the opening inth bracket,so'that when the bracket is bolted on the engine cylinder, it servesalso: to hold the'spark plug or support forthe electrodes in place inthe engine cylinder. The spring'lfor normally holding. the' 'e'lc' 'atrodes closed is wound about the shaft carrying the movable electrodeand is, there-f fore, supportedqby the member which can" riestheelectrodes. The fixed electrode has a projecting rod which" has 'asliding engagement with an insulated terminal on the magneto bracket,which is in turn connected with the magneto generator; I 1

Referring more detail. to the. drawings, I have shown my invention asapplied tofan ignition device which. includes amen-1am generator G, afixed electrode 1, carrying a contact point 2, a movable. electrode ii,"carry' ing acontact point 4:, which is adapted to en? gage the contactpoint 2; The fixedel'ectrode 1 is carried by a rod 5, which is mountedin; an insulating sleeve, and said A insulating sleeve isin turn mountedin, a sp'ark'plug or} supportingmember 6; The movable electrode: 3is-carried by a shaft" Twhich islikew'ise. mounted in this spark plug:or supporting? member 6. The supporting member 6 is tapered, so as tofitsnugly the-tapered open ing in the wall of the cylinder, whi'clicylinder is indicated atC in the drawin*gs. Q11 the outer endofthe'shaft athere is an arm The magneto generator is carried- 8, which isfixed to the shaft. spring 9 encircles the shaft between the arm and thesupporting member 6 and is connected at one end to said arm and at itsother end to the supporting member 6. This spring holds themovableelectrode shaft seated and the contact points 4: and 2 in engagementwith each other. The magneto generator G is carried by a bracket 10.Said bracket is formed with a shelf 11, to which the magneto generatoris bolted by suitable bolts 12. The magneto generator is provided with atrip lever 13, and this trip lever is operated by means of a main spring14. The partied lar construction of the magneto and the actuating meanstherefor forms no part of the present invention, but is shown, describedand claimed in my copending application Serial No. 312,228, filed ofeven date herewith.

'The bracket 10 is formed with a face member 15 which is provided withan opening 16 adapted to surround the projecting end of the spark. plugor supporting memher 6. Said spark plug or supporting member 6isprovided with a shoulder 17, which is adapted to overlie the edge ofthe opening 16. The bracket 10 has an opening 18 which extends over astud 19 carried by the pad 20 formed on the engine cylinder, and a nut21 on the end of said stud clamps the bracket firmly against the pad 20and at the same time causes the bracket to firmly clamp the spark plugor supporting member 6 in the engine cylinder. The trip lever 13 isadapted to engage a cam face. on the arm 8 in the usual manner forseparating the electrodes. One of the terminals of the magneto generatoris connected to a rod 22 which is mounted in a sleeve of insulatingmaterial 23 and said sleeve is mounted in a boss 24: formed in thebracket 10 carrying the mag neto. The outer end of said rod 22terminates in a recess 25. The rod 5 has an extending'rod 26 which isadapted to engage the walls of said recess and thus form an electricalconnection with the rod 22.

Mounted on the spark plug or supporting member 6 is a pin 27 which isadapted to engage a recess 28 formed in a lug 29 carried bythe bracket10. This pin is set eccentric to the center of the opening 16, and,therefore, serves to hold the member 6 from any rotative movementrelative to the bracket 10. 4 From the above, it will be apparent that Ihave provided a magneto generator wherein the support for the fixed andmovable electrodes is a self-contained unit adapted to be independentlyplaced on the engine cylinder and said supporting member is held inplace by the bracket.

It will also be notedthat the, fixed electrode has a sliding electricalcontactwith one terminal of the magneto generator, and,

' therefore, the entire bracket may be readily removed withoutdisturbing any of the parts and the spark plug for the movable and fixedelectrodes may be quickly replaced by a new part.

It is obvious that minor changes in the details of construction andarrangement of parts may be made without departing from the spirit ofthe invention as set forth in the appended claims.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is:

1. In an ignition device, a fixed and a movable electrode, a supporttherefor projecting beyond the face of the engine cylinder, a: magnetogenerator, a bracket for supporting said generator, said bracket havingan opening formed therein surrounding the projecting support for theelectrodes, and means forholding the support for the electrodes and thebracket in a predetermined relation to each other, and means forsecuring the bracketto the engine cylinder.

2. In an ignition device, a fixed and a movable electrode, a supporttherefor projecting beyond the face of the engine cylinder, a magnetogenerator, a bracket for supporting said generator, said bracket havingan opening formed therein surrounding the projecting support for theelectrodes, and means for securing the bracket to the engine cylinder,said support for the electrodes having a pin adapted to engage a recessin the bracket for holding the support from rotating movement in thebracket.

3. In an ignition device, a fixed and a movable electrode, a support forsaid electrodes, a magneto generator, a bracket for said magnetogenerator, means for securing the bracket to the engine cylinder, aterminal rod carried by the bracket for the magneto generator, and meanswhereby said 'fixed electrode has a sliding engagement with saidterminal.

4. In an ignition device, a fixed and a movable electrode, a supportingmember for said electrodes, a spring for holding said electrodesnormally closed, a bracket independent of the support for theelectrodes, a magneto generator carried by the bracket, means forsecuring the bracket to the engine cylinder, said bracket having meansfor surrounding the support for the electrodes and for holding thesupport on the engine cylinder.

5. In an ignition device, a fixed and a movable electrode, a supportingmember for said electrodes, a. spring for holding said electrodesnormally closed, a bracket independent of the support for theelectrodes, 9. magneto generator carried by the bracket, means forsecuring the bracket to the engine cylinder, said bracket having meansfor surrounding the support for the electrodes and for holding thesupport on the engine cylinder, a rod terminal having a cup shapedrecessed end carried by the bracket for the magneto generator, saidfixed electrode having an extension adapted to make sliding engagementwith the cup-shaped recess in the end of the terminal.

6. In an ignition device, electrodes, a sup port for said electrodes, amagneto generator, a bracket carrying said magneto generator and havingan opening in which said support for the electrodes projects, saidsupport having a shoulder adapted to be engaged by the bracket, wherebythe support is held on the engine cylinder and additional means forholding said support for the electrode and the brackets in apredetermined position relative to each other.

7. In an ignition device, electrodes, a support for said electrodes, amagneto generator, a bracket carrying said magneto generator and havingan opening in which said support for the electrodes projects, saidsupport having a shoulder adapted to be engaged by the bracket, wherebythe support is held on the engine cylinder, a terminal rod carried bythe bracket for the magneto generator, one of said electrodes'having anextension making sliding contact with a cupshaped recess in the terminalrod.

8. In an ignition device, electrodes, a cylindrical support for saidelectrodes, a

bracket, a magneto generator mounted on the bracket, said bracket havingopenings adapted to receive and fit an extension on said support, saidbracket and support having interfittingmeans for holding the supportfrom rotating in the bracket.

9. In anignit-ion device, electrodes, a cylindrical support for saidelectrodes, a bracket, a magneto generator mounted on the bracket, saidbracket having openings adapted to receive and fit an extension on saidsupport, and a pin carried by the supture.

ALBERT ERICKSON.

